Do you understand all anime what is it about, the story don't check wiki of the anime. Just by watching it, can you or you can't?
I can't understand until seeing at wiki or plot
Tell me what about you (Truth)?

Do you understand all anime what is it about, the story don't check wiki of the anime. Just by watching it, can you or you can't?
I can't understand until seeing at wiki or plot
Tell me what about you (Truth)?

Do you understand all anime what is it about, the story don't check wiki of the anime. Just by watching it, can you or you can't?
I can't understand until seeing at wiki or plot
Tell me what about you (Truth)?

Do you understand all anime what is it about, the story don't check wiki of the anime. Just by watching it, can you or you can't?
I can't understand until seeing at wiki or plot
Tell me what about you (Truth)?

Most of the time, I understand the plot from the synopsis. Sometimes, it takes the first couple of episodes. The only anime I had a hard time understanding was Mekakucity Actors, although, half way into it, it finally started to make sense. Evangelion definitely blew my mind though.

Honestly, I only go to the wiki sites if I'm interested about the characters like their age and other facts. Maybe, what their name means. Stuff like that.

I can usually understand the story just fine, though Anime that like to do over-exposition or that doesn't really grab my attention really throws me for a loop. The Irregular at Magical High is one example.

The only anime I ever watched where I never really understood what was happening was Serial Experiments Lain--although I think I wasn't supposed to actually understand what was happening in that one.

There have been anime where I understand the basics, but a few of the explanations or finer points didn't quite make sense to me on first viewing: Trigun, Eureka Seven, Natsuyuki Rendezvous, Red Data Girl... I'm probably forgetting a couple. Also, I think Little Busters only made complete sense to me because I had previously played the Visual Novel. (I'm not trying to attack these shows, btw; some of them are among my favorites.)

Most of the time I can understand the story of an anime without the need or external sources, but I really do like visiting various forums to see what other people concluded based on a series' ending/overall plot.